cudnt that be due to some other factors. for example they jst didnt eat meat they ate all other stuff raw too like nuts and stuff and may be they used their teeth to crack the nuts and they gnawed at the bones and thats y they had sharper teeth? may be they were not born wih sharp teeth their teeth jst became shapr afterwards cuz of eating wierd food
and afterwards ppl invented machines they ddnt have to use their teeth so their teeth stayed normal
jst thinking